Vapor seal for tanks and method of making the same



,sept. 7,1926. 1,599,110

- 1.. A. BALDWIN- VAPOR SEAL Foa TANS AND METHCD oF MAKING THE SAME Filed July 15 ,v 1925 tank structure, forms an annular ring l2, which covers Thevapor-proof cenient, thus poured into.

the mold space between the strip 6 and the sealing all the joints between top plates, and alsothe rivets t and 5. For additional sealing, as Well as for protection of the canvas strip 6, a lieavy coet 13 of vapor-preo cement is mopped on to the outside of the canvas, extending over4 the closed edge thereof, and joilliing the cover-coat 14, of similar materia lt Will be observed that the form or mold issecured to the tank side by means of girths 'which involve no perforations in the tenk plates, (as would be required it rivets or screws were employed).

claim:

l. A vapor seal for oil tanks and the like, comprising e mold-ennulus of flexible Inaterial extending around end spaced from the side und of vapor-proof ceinent escano the eaves and over the edge of the tank-top, a flexible girth securing the annulus to the tank side, a second leXible Agirth contracting the annulus into theA eaves-angle of the tank, a clewline in the upper edge of the annulus and accessible at a plurality ofintervals in its periphery and a belt of Vaporpi'oof cement lilling'tlie annulus and the-roof an structure. y

2. A vapor seal for oil tanks and the like, comprising a mold-annulus of flexible material extending around and s aced from the eaves and over the edge of t e tank-top,

side of the tank a flexible girth securing) the annulus to the.

tank side, a second liexi le girth contracting the annulus into the eaves-angle of the tank, a clewline in the upper edge of the annulus and accessible at a lurality of intervals in its periphery ang a belt of elastic space between said vapor-proof cement filling the space between sad annulus the tank structure.

Si ned by me at St. Louis, Missouri this day of May 1925.

LESLIE'A. BALDWIN.

and the roof and side of eight 

